# 打印菱形

n = int(input("请输入菱形的边长："))

for i in range(1, n + 1):
    print(" " * (n - i), end="")
    print("* " * (i))

for i in range(n - 1, 0, -1):
    print(" " * (n - i), end="")
    print("* " * (i))
